"It is going to be a different kettle of fish this week playing against Manchester United and we have certainly got to take the impetus of the second half into the game," he says.
"We have to play at that tempo, with the same gusto going forward, but we have to defend miles, miles better."
Paul even saw positives in the first half against Leeds despite the 4-1 half time score line.
"In the first half even, some of our play, attacking-wise, was quite good as well - but it was overshadowed by people getting free headers and back passes going straight to the opposing striker," he says.
"Disheartened is certainly not the word about how we feel but we know we are going to be coming up against some very high quality opposition this weekend.
"We really have to get amongst Manchester United - but we have to play with our heads, without letting our emotions get us carried away.
"The dressing room was a mighty quiet place after the game on Sunday and individuals involved were all very disappointed in the way the game went.
"There is a lot of hard work ahead; the players know that."